ADS1298R: ADS1298RECGFE-PDK

Haruo Akaba

Prodigy 525 points

Part Number: ADS1298R
Other Parts Discussed in Thread: , LMP2231

I have any questions.

Q1 : ADS1298R

Is it possible to support GSR(Galvanic Skin Responce) for this device?

Or do you have a solution to measure GSR?

Q2 : ADS1298RECGFE-PDK

This product seems to be fixed at a data rate of 500sps.
Can we change the data rate?

Best Regards, BANE

over 6 years ago

0 Alexander Smith over 6 years ago

TI__Mastermind 49051 points

Hi Bane,

Thanks for your post!

1) Yes it is possible to support GSR with the ADS1298R.

This TIDesign will be helpful:
www.ti.com/.../TIDM-BIOSIGNMONITOR

These TIDesigns may also be useful:

www.ti.com/.../TIDA-00292
www.ti.com/.../TIDA-00011
www.ti.com/.../tida-00009

2) The data rate can be changed from a drop down menu in the register configuration tab of the EVM GUI.

0 Haruo Akaba over 6 years ago in reply to Alexander Smith

TI__Prodigy 525 points

Smith-san

Thanks you for your quick reply.

>1) Yes it is possible to support GSR with the ADS1298R.

I can not find the GSR comment on the ADS 1298 data sheet.

Which peripheral can this product use GSR?

This TI design seems to be using the LMP2231 and MSP430.

Do you have any documentation to use GSR with ADS1298R?

Best Regards, BANE

0 Alexander Smith over 6 years ago in reply to Haruo Akaba

TI__Mastermind 49051 points

Hello Akaba-san,

I apologize, I do not think I fully understood the question and my previous response was not very clear. I should have provided additional information.

The ADS1298R does not have a peripheral to support GSR on it's own.

From section 3.1.2 of the BIOSIGNMONITOR document covers the GSR circuit: www.ti.com/.../tidu875.pdf

From this design, the LM4041& LMP2231 are used for an analog measurement of GSR which is fed directly to the MCU ADC. For a higher accuracy measurement, the LM4041& LMP2231 could be fed to the ADS1298R, then to the MCU digital input.

Additionally, ECG is commonly used in the same equipment with GSR, which is the intended function of the ADS1298R.

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ADS1298R: ADS1298RECGFE-PDK